Lamp-burner.



1 P. TRUESBELL.

LAMP BURNER.

. APPLICATION FILED FEB. 23.1915. l 9 1 l y lL U3 'Patentd July 2, 1918.

I. a u. Enns! 4 5 32.". 'l 3 u 23H3 f 3 v invii l 3 3 lill JOHN PHILIEMON TRUESDELL, OF TIVIERTON, RHODE ISLAND, ASSIG-NOR 0F ONE-HALF T0 JRMES Ii., LEARNING', TRUSTEE, OF FALL RIVER, MSSAGHUSETTS.

LAMP-BURNER.

navarros,

Specication of Letters Patent.

application filed February 23, 1915. Serial No. 10,107.

To all whom t may concern:

Be it known that I, JOI-IN P. TRUESDELL, a citizen of the United States, and a resident of Tiverton, in the county of Newport and State of Rhode Island, have invented an Improvement in Lamp-Burners, of which the following description, in connection with the accompanying drawings, is a speciiupon the line 2-2 of Fig. 1.

In accordance with and in carrying out my invention, I employ a liquid fuel which may for example be kerosene oil. The nature of the liquid fuel may be widely varied. I provide a suitable wick or other device to convey the liquid fuel through capillary action' from the source of supply. 'Ihe said liquid fuel is prior to combustion converted into a vapor, and it is my belief that such vapor is converted into a gas which is fed to the iiame and burned as a gas. I have demonstrated that by my invention and without the use of a mantle or like device, I produce a white or substantially white iiame burning with perfect combustion, and hence with no carbon or other deposit and without odor. rllhe flame when extinguished leaves no smoke, and experiments have shown that I obtain the same degree of light with one third less supply of oil, or conversely stated that I obtain two thirds more candle power from the same supply of oil and also obtain a greater degree of heat, which I consider to be owingI in part to what I believe to be the fact that the combustion occurs from a gas and not from a vapor. Other important features of my invention will be set forth hereinafter.

Referring more particularly to the drawings, I have represented a lamp burner having a base 1 through which air to support liti combustion may be introduced through a 3. Preferably secured to or formed suitable number of openings 2, whereby the combustion-supporting air is supplied through the central draft passage 3. 'Ihe form of the base 1 may be widely varied within the scope of my invention, and if desired it may be of such conical form as to result in the drawing of an additional supply of air through the enlarged base and the contracted conical portion thereof. VThe base 1 is provided with a suitable reservoir 4, the upper portion 5 whereof terminates in a ring-like part 6 whereon may be removably supported a cap-like member 7 having a beaded upper end 8 resting upon the top of the ring-like part 6. Formed with ory suitably secured to the reservoir portion 4L of the base is an inner wick tube 9 extending up through the reservoir to a suitable extent and herein represented as terminating at 10, said wick tube forming a continuation of the central draft passage with the cap portiony 7 is the outer wick tube 11 terminating at the point 12, and positioned between said tubes is a wick 13 of any suitable construction. Any suitable means may be provided to elevate the wick with respect to the tubes 9, 11. For that purpose I have shown a ring 14 having a laterally projecting arm 15 and an upright arm 1G provided with a rack 17 with which meshes the usual pinion adapted to be rotated by the disk 18. Any other suitable means for adjusting the wick may, however, be employed and the wick may be supported in any suitable manner.

Resting in the base of the cup 7 and preferably secured thereto is a perforated member 19, herein represented as of inverted frusto-conical shape. The upper end thereof is beaded as represented at 20, and thereon is supported the so-called gallery 21 having an inwardly extending portion 22 to receive the lower end of the chimney 23 and an upwardly extending, somewhat domeshaped portion 24: perforated as indicated at 25. Secured to the gallery 21 as by rivets 26 are spring arms 27 embracing the outer face of the chimney and extending downwardly and inwardly a suitable distance where they are secured in any suitable manner, as by rivets 28 to a sleeve 29 removably supported upon the outer wick tube 11. The construction is such that the said gallery together with the spring arms 27 and the sleeve 29 may be removed from the lamp.-

Formed`v withVV or 'suitably connected with" the perforated portion 24 of the gallery and upwardly extending therefrom is ringe' like portion or member 30 constituting a portion." of i the means for controlling the' draft or air supply to the flameand also constituting the outer'wall of what I may designateras the gasgehamber 31'and into whichthe wick 13 may` extend to a greater orjlessyextent dependinggupon the size and eharactervof theflame desired'. n y d ltadially inside the wick 13 IV position a tubularv member 32', controlling. and di reet ing the air. that is 'admitted through the centralpassage 3. Any suitable meansmay be@ prop vided,v vertically to adjust the said tube 32,. Hereinfor the purpose I have rep*- /resented a rod 33 connected to said tube at Icated' at 40, so as also' to contaet'with the inner surfacel of the. inner wick tube 9. Said tube Vmay be longitudinally slotted at spaced points' as indicatedlat 4l andsabove said bow-ed bars 40 the saidtubular member' 32fis represented as perforated at 42. Ihavehere' shown the said tubular member 3.2 asvhavingoa' perforated cap portion 43 suitably secured thereto, but if desired the parts maybe integrally' formed. Preferably said cap portion 43 is outwardly flared'as indicatedy at 44, said flaring portieri" being preferably perforated'. Saidlcap portion 43 has a'closed top as shown at 45, which, however, may be provided with' a suitable number' of'air'` exit openings' 46, whereby the shapeA ofthe flame' may be i controlled.

The ai'rlv to support' combustion' is inv this embodiment' ofN my inveltiom supplied at four"points,` namely, ex'teriorly of' the ringn flikeimemb'er 30',`where it comes inieontact with the lowerpo'r'tion of' the`- chimney 23 and serves to cool thesamef; iinteriorly ofthe Y rinfgllike member 30, where it isfadmitted intofthe' socalledY gas-formingehamber' 31 between' thecylindrica'l member 32 and the inner Wick tube- 9, whereby s a'idf wicktube 9 and the'xwick 13 are maintained cool or substantially sfo, the air .entering at this poit` being also2 admitted` tozthel .so-called gas forming chamber 3l; and through the cylindrical member 32, the air passing therefrom through the opening 43 to the llame. By reason of. the' fact 'that the wick holding tube 9 and the wick 13 are kept cool, all tendency of the flame to draw an excess quant-ity of fuel from the reservoir 4 is prevented, and therefore the llame burns with perfect combustion and with a white or substantially white'llame. without deposit and without smoke when the flame is extinguished.

yThe cylindrical member 32.1nay be very accurately adjusted vertically to any desired degree of fin'eness, and hy such vertical adjustment the eharaeter of the llame accuratelycontrolled. By moving the said cylindrical member 32 downward, the upper edge 47 thereof approaches more nearly to theupvper edge of the ringflike member 3l), and hence not only is'the' size of the socalled. forming chamber 31 varied, but theY forceof movement of and the amount of air applied to the flame through the said chamber 31- are controlled: The downward -movement of the said cylindrical member 32 reduces the size of the llame, V`and moreover renders the same whiter and more brilliant,'since the supply of air thereto is lessened. Careful experiments have demonstrated thatthe `flameI commences at the top of the wick, and even when the wick is eleva'ted more or less heyondthe tops 1() and 12 of the tubes 9,11, the llame does not creep fbackdown the wick as has heretofore occurred 'in lamps with which I am familiar. Perfect coi'nbustionvoccurs,with any sixe of flame, that is at any candle power. and. the flame burns without odor and without deposit.

Theair supplied through the cylindrical member 32- issuperheated at or before it isdischargedfthrough the perforations 43. The air supplied to the llame at or through the'ehamber 31 is perfectly controlled, and ini-'this embodiment oflthe` invention through the-iregu'lation of the size of the chamber 31 and the division of the air supplyasfherein disclosed.

Havingv` thus described one illustrative embodiment of my invention andthe best mode knownto be for carrying out my methodg'l desire it` to be understoodr that althoughZ specific terms are' euiployed, they are' used' in a generic and' descriptive sense and" not for' purposes ofliu'iitation, the scope ofthe invention'being'set forth in the following claims.

Claims:

l: A. liquid-fuel burner comprising in combination,'means to contain'afliquid fuel supply, a wick; support, an air admission tube positioned interiorly of and having a portion spaced* from said wick support, thereby to afford' an air passage therebetween, said tube having al slidin'gcngagement with Said wick support, and a vertical lll() wall outside of the wick support and cooperating with said tube to form an upwardly uncontracted chamber above the wick.

2. A liquid-fuel burner comprising in combination, means to contain a liquid fuel supply, a wick support, a tube 32 positioned interiorly of and having a portion spaced from said wick support, said tube extending to a point above the wick support and provided with an outwardly flaring upper end, and an upright wall radially outside of said wick support and coperating with said inner tube to form a chamber.

3. A liquid-fuel burner comprising in combination, means to contain a liquid fuel supply, a. wick support, a tube 32 spaced throughout a substantial portion of its length from but supported by said wick support, the upper portion of said tube being perforated and extending above said wick support, whereby air is admitted to the flame both between the wick support and said tube and through the tube, and an upright wall radially outside of said wick support and cooperating with said tube to form a chamber.

l. A liquid-fuel burner comprising in combination, means to contain a liquid fuelsupply, a wick support, an air admission tube mounted within said wick support and having a closed, flat, upper end, and a short imperforate upright wall 80 radially outside of said wick support and terminating below'the upper end of said tube, said tube and wall forming a chamber, and means for admitting air to said chamber both interiorly and exteriorly of the wick support.

5. A liquid-fuel burner comprising in combination, means to contain a liquid fuel supply, a wick support, an air admission tube mounted within said wick support and having a closed, flat, upper end, and a short, imperforate upright wall 30 radially outside of said wick support and terminating below the upper end of said tube, said tube and wall forming a chamber, means for admitting air to said chamber both interiorly and exteriorly of the wick support, and means for admitting air radially outside of said outer wall. p

6. A liquid-fuel burner comprising in combination, means to contain a liquid fuel supply, a wick support, an air admission tube mounted within said chamber and having a closed, dat, upper end and a short, imperforate upright wall 3() radially outside of said wick support and terminating below the upper end of said tube, said tube and wall forming a chamber, means for admitting air to said chamber both interiorly and exteriorly of the wick support, and means for admitting air radially outside of said outer' wall below the upper end of said. inner tube.

7. A liquid-fuel burner comprising, in combination, means to contain a liquid fuel supply, an annular wick tube extending therefrom, said wick tube constituting a central draft device supplying air internally to the base of the wick, a perforated gallery about said wick tube and a wall rising from said gallery and forming a chamber about the wick, an air conducting device extending into said wick tube and supplying air therefrom near the top of the flame in an outward direction substantially transverse to the axis of the tube.

8. A liquid-fuel burner comprising, in combination, means to contain a liquid fuel supply, a wick device to conduct liquid fuel therefrom, a chamber at the upper edge of said wick, means to admit air thereto and a member of varying cross section supported above said chamber, connections therefrom to the exterior of the burner and permitting manipulation while the burner is alight to adjust said member into and out from said chamber to vary the size thereof.

9. A liquid fuel burner comprising in combination a fuel reservoir, a wick support comprising concentric draft and wick tubes, a tube 33 extending for a substantial distance into said draft tube but spaced from the walls therefrom whereby to provide for an air current at the periphery of the draft tube, said tube 33 extending beyond the draft tube and having provision for directing air outwardly to the flame beyond the wick, and means associated with the tube permitting adjustment thereof while the burner is in use.

lin testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JOHN PHILEMON TRUESDELL.

Witnesses:

G. lB. HOWLAND, WM. WELCH.

Copies of this patent may be obtained for live cents each, by addressing the Uommissioncr or Patents, Washington, w. 

